FR697027A - Cinematographic projection device - Google Patents

Cinematographic projection device

Info

Publication number: FR697027A
Authority: FR; France
Prior art keywords: projection device; cinematographic projection; cinematographic; projection
Prior art date: 1929-05-30
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

Other languages

Inventor

Hans Knudsen

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1929-05-30

Filing date

1930-05-30

Publication date

1931-01-10

1930-05-30 Application filed filed Critical

1931-01-10 Application granted granted Critical

1931-01-10 Publication of FR697027A publication Critical patent/FR697027A/en

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/30—Details adapted to collapse or fold, e.g. for portability

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)

FR697027D 1929-05-30 1930-05-30 Cinematographic projection device Expired FR697027A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB697027X		1929-05-30

Publications (1)

Publication Number	Publication Date
FR697027A true FR697027A (en)	1931-01-10

Family

ID=10493489

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR697027D Expired FR697027A (en)	1929-05-30	1930-05-30	Cinematographic projection device

Country Status (1)

Country	Link
FR (1)	FR697027A (en)

1930
- 1930-05-30 FR FR697027D patent/FR697027A/en not_active Expired

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